[rogerbinns]

Gory details are at https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/14478...

It actually mounts root correctly, but them fails to mount home which has exactly the same details except a different subvol parameter.

[digi_owl]

Systemd seems to have ongoing problems with mounting...

[rogerbinns]

In this case it would perfectly if it just tried to do the mount, exactly as written in fstab. Instead it tries to be clever and ends up outwitting itself.